Improvement in water-meters



Param* JOHN S. BABDEN, OF PROVIDENCE, RHODE ISLANI).

IMPROVEMENT IN WATER-METERS.

Specification forming part of Letters Patcnt No. 117,035, dated July 18, 1871.

To all whom it may concern:

Beit known that I, JOHN S. BARDEN, of Providence, in the county of Providence and State of Rhode Island, have invented certain Improvements in IVater-Meters, of which the following is a specification:

Figure l is a plan view of my invention with the top plate, pistons, and valves removed. Fig. 2 is a longitudinal vertical section through line a; w, Figs. l and 4. Fig. 3 is a similar section through line y y. Fig. 4 is an end elevation with the end plate removed, and Fig. 5 a longitudinal vertical central section through line z z, Figs. l and 4.

This invention relates to that class of waternieters which employs two reciprocating pistons; and it consists in an arrangement of ports and valves, as will hereinafter more fully appear.

In the drawing, A represents the casing of the meter, in the upper portion of which is the chamber B, into which open the induction-ports C. D D' represent circular chambers opening into chamber B, and extending therefrom to the ends of meter A. E represents a circular chamber running from end to end of meter A below chambers B D D', and communicating with eductionports F. The chamber E is provided at its center with an enlargement, E'. G G' represent ports connecting chamber B to chamber E. H H' represent smaller ports in the bottom of chamber B, which ports communicate, through passages h h' and ports I I', with the outer ends of chambers D D. J J' represent similar ports leading from the bottom of chamber B, through d passages K K' and ports VL L', to the ends of chamber E. M represents a D-valve, which is located on the bottom of chamber B, and is of suiiicient length to connect either of the ports J Y J' with the port G', leaving the other port in open communication with chamber B, as shown in Fig. 3. N represents another valve, located beside valve M, and provided on its under side .with a stem or projection, N1, which extends downward through port G into chamber E. The valve N is provided on its under side with the passages n n', which act to connect port G alternately with ports H H'. The bottom of chainber B is provided with recesses N2 N3, which connect ports H H' alternately with the chamber B through passages n n' of valve N, as shown in Fig. 2. O represents a shaft connecting pistion to ports G H H' and recesses N2 N3 at every stroke of said piston.

In Figs. 2,3, and 5 the connections of the parts are shown, as follows: The chamber D is connected, through port I, passage h, port H, passage a, and recess N 2, with the interior of chamber B, while the chamber D' is connected, through port I', passage h', port H', passage a', and port G', with the center of chamber E. At the same -time the left-hand end of chamber E is connected, through port L, passage K, and port-J, with chamber B, while its opposite end is connected with the induction-pipes F through port L, passage K', port S, valve M, and port G'. It will thus be readily seen that water entering chamber D through induction-ports C passes directly into chamber D through passage h, port I, &c., a-nd, impinging against piston P, forces the same, together with piston P', toward the ri ght-hand end of chamber D', displacing the water in the latter, which linds egress through port I', passage h', &c., into the annular space E, and out at the eduction-ports F. Meanwhile the pistons P P', in making their right-handstroke, carry valve M along to the position shown in Fig. 3, thus admitting water through port J, &e., to the lefthand end of chamber E, which forces pistons S S' toward the opposite end of the same, the water displaced by piston S' passing through port L', passage K', valve M, and port G', to the eduction F. The piston S, in making the above stroke, impinges against the stem or projection N1 of valve N and carries the same along with it toward the right-hand end of the machine, and,

when its stroke is completed, leaves said valve in a position the reverse of that shown in Fig. 2 -that is, connecting chamber D', through passages h' a', recess N3, dto., with chamber B, and connecting chamber D, through passages h a and port G, with the eduction F-thus admitting induction-water to chamber D' and driving pistons P P' toward the left-hand end of chamber D, the

FFICE.

eXhaust from which passes out through passage h, 85o. In this operation the pistons P P', through. their shaft O, reverse the position of valve M, connecting the right-hand end of chamber E, through passage K' and ports L' J', with chain.- ber B, and the opposite end, through ports L J, lmssage K, and valve M, with the eduotion F, thus admitting Water to chamber E through passage K and iinpelling pistons S S' toward the left, and piston S', striking the stem N' of valve N, causes the latter to resume the position shown in Fig. 1. The operation is thus continued, the

pistons P P' operating valve M in such manner as to reverse pistons S S', and vice versa.

Having thus fully described in y invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The Chambers B D D', in combination with chamber E, the latter being connected to chainber B by ports G G', substantially as described.

2. The combination of port G', valve M, ports J J' L L', passages K K', and pistons P P' S S', with chambers B, D, D', and E, substantially as described.

3. rlhe combination of ports H H', passages h h', recesses N2 N3, With pistons P P' S S' and valve N, substantially as set forth.

In testimony whereof I have signed my naine to this speciication in the presence of two subscribing Witnesses.

JOHN S. BARDEN.

Witnesses:

CARROLL D. WRIGHT, CHARLES F. BROWN. 

